The rabbit's long ears, which can be more than 10 cm (4 in) long, are probably an adaptation for detecting predators. They have large, powerful hind legs. The two front paws have 5 toes, the extra called the dewclaw.
However, Moorish idol larvae spend a long time drifting through the open ocean before they mature, so regional populations donât remain isolated enough to develop particular traits. Because of its beauty and its identity as a quintessential reef fish, the Moorish idol is a very popular fish in the aquarium trade.
manta ray Manta rays swimming in the waters of the Great Barrier Reef, off the eastern coast of Australia. Â© Fun Travel TV The guitarfishes are a group of fishes that are closely related to the rays and are either classified as a separate order (Rhinobatiformes) or as a suborder (Rhinobatoidei) of the ray order (Batoidei). For more information on species and groups of rays, see manta ray; electric ray; guitarfish; sawfish; skate; stingray.